Can a serpentine belt cause a knocking noise?
Symptoms of a broken serpentine belt include loud slapping, squealing or knocking noises coming from under the hood. The battery-shaped charging system warning light might also come on because the alternator will stop charging the battery. This causes the belt to start slipping from time to time.
Why is my serpentine belt knocking?
When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise. Symptom 2: Knocking or slapping. This can cause a slapping or knocking noise.
How to replace the serpentine belt in a VW Passat?
Install the new serpentine belt, making sure the belt is seated properly in each groove. Take your wrench off of the belt to release the belt tensioner. Run the engine and observe the belt, checking for correct installation. Replace the engine cover if necessary. For correct removal and replacement of the engine cover, see owner’s documentation.
When to change timing belt on VW Passat?
• 2004-2005 VW Passat change interval is 80,000 miles for 2.0L TDI (US) B5 chassis. In our own service facility, we’ve seen a few original timing belts last over 90,000 miles and others ready to break before 75,000 miles. In addition to mileage there are other factors that age the timing belt and related components.
Where is the tensioner on a VW Passat?
Find the belt tensioner pulley and rotate it to release tension. The tensioner pulley is generally between the crankshaft and another component. You’ll see it is not connected to a component and has a bolt in the middle. On the VW Passat, it can be tough to reach the tensioner. Some recommend a long 17-millimeter wrench.
How do you thread a Dayco serpentine belt?
Loosen the bolt and slip the belt off of the pulleys. Look at the belt routing diagram to find out where to thread the new serpentine belt. If you can’t find a routing diagram, sketch one out before removing the old belt. You may be able to find a diagram on the Dayco belt guide site.